@inproceedings{e424ef0a7094438e8bd189e512ad73f6,
title = "A novel lightweight Fizeau infrared interferometric imaging system",
abstract = "Aperture synthesis imaging techniques using an interferometer provide a means to achieve imagery with spatial resolution equivalent to a conventional filled aperture telescope at a significantly reduced size, weight and cost, an important implication for air- and space-borne persistent observing platforms. These concepts have been realized in SIRII (Space-based IR-imaging interferometer), a new light-weight, compact SWIR and MWIR imaging interferometer designed for space-based surveillance. The sensor design is configured as a six-element Fizeau interferometer; it is scalable, light-weight, and uses structural components and main optics made of carbon fiber replicated polymer (CFRP) that are easy to fabricate and inexpensive. A three-element prototype of the SIRII imager has been constructed. The optics, detectors, and interferometric signal processing principles draw on experience developed in ground-based astronomical applications designed to yield the highest sensitivity and resolution with cost-effective optical solutions. SIRII is being designed for technical intelligence from geo-stationary orbit. It has an instantaneous 6 × 6 mrad FOV and the ability to rapidly scan a 6 × 6 deg FOV, with a minimal SNR. The interferometric design can be scaled to larger equivalent filled aperture, while minimizing weight and costs when compared to a filled aperture telescope with equivalent resolution. This scalability in SIRII allows it address a range of IR-imaging scenarios.",
keywords = "Earth science, Imaging, Interferometer, IR infrared, IR infrared surveillance, Near earth object identification, Persistence surveillance, Threat warning",
author = "Hope, {Douglas A.} and Michael Hart and Steve Warner and Oli Durney and Robert Romeo",
note = "Publisher Copyright: {\textcopyright} 2016 SPIE.; Sensors and Systems for Space Applications IX ; Conference date: 18-04-2016 Through 19-04-2016",
year = "2016",
doi = "10.1117/12.2223426",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Genshe Chen and Pham, {Khanh D.}",
booktitle = "Sensors and Systems for Space Applications IX",
}